Fluid delivery device, transcutaneous access tool and insertion mechanism for use therewith
AssigneeInsulet Corporation
InventorsSteven Diianni, Ian McLaughlin, Jason O'Connor, Robert Campbell, Kevin Schmid
Life of this patent
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Abstract
Disclosed is a fluid delivery device including a fluid reservoir and a transcutaneous access tool fluidly coupled to the fluid reservoir, wherein the transcutaneous access tool includes a needle or a trocar. The fluid delivery device may further include a transcutaneous access tool insertion mechanism for deploying the transcutaneous access tool, wherein the insertion mechanism is configured to insert and retract the needle/trocar in a single, uninterrupted motion.
Claims18
A fluid delivery device, comprising:
- a fluid reservoir;
- a transcutaneous access tool fluidly coupled to the fluid reservoir, the transcutaneous access tool including a needle and a cannula;
- a glucose monitoring device, wherein the fluid reservoir, the transcutaneous access tool, and the glucose monitoring device are located within a housing, and wherein at least a portion of the transcutaneous access tool and the glucose monitoring device are configured to extend from the housing and into a patient;
- and an insertion and retraction mechanism within the housing, the insertion and retraction mechanism comprising:
- a spring defining a longitudinal axis;
- and a first linkage and a second linkage coupled between the spring and a first sliding member, wherein the first sliding member is coupled with the needle, wherein the first and second linkages are configured to move the first sliding member in an insertion direction and a retraction direction in response to a force from the spring, and wherein the first linkage includes a first end adjacent the spring and a second end directly coupled to the second linkage;
- and a frame operable to lock the first sliding member and a second sliding member in a pre-deployment position and to lock the second sliding member in a post-deployment position, wherein the needle is located within the cannula such that the cannula remains deployed when the needle is retracted.
A fluid delivery device, comprising:
- a fluid reservoir;
- a transcutaneous access tool fluidly coupled to the fluid reservoir, the transcutaneous access tool including a cannula, and a trocar located inside the cannula;
- a glucose monitoring device extending through the cannula;
- an insertion mechanism configured to deploy at least a portion of the transcutaneous access tool and the glucose monitoring device into a patient, the insertion mechanism comprising:
- a first sliding member coupled with the trocar;
- a second sliding member adjacent the first sliding member, the second sliding member coupled with the cannula and operable to move the cannula in an insertion direction;
- and
- linkages coupled between a torsion spring and the first sliding member, wherein the torsion spring and the linkages are operable to move the first sliding member in the insertion direction and a retraction direction.
A transcutaneous access tool insertion and retraction mechanism, comprising:
- a needle located within a cannula;
- a first sliding member coupled with the needle and operable to move the needle in an insertion direction and in a retraction direction;
- a second sliding member coupled with the cannula and operable to move the cannula in the insertion direction, wherein a glucose monitoring device extends between the first and second sliding members;
- and
- a first linkage and a second linkage coupled between a torsion spring and the first sliding member such that, upon deployment, energy stored in the torsion spring causes the first and second linkages to cooperate to move the first sliding member in the insertion direction and the retraction direction.
Dependencies are inferred from the claim text.